http://www.cnblogs.com/freeliver54/archive/2007/01/05/612393.html
http://www.cnblogs.com/Terrylee/archive/2006/08/01/Enterprise_Library.html
:建立数据库
我们在SQL SERVER 2000里建立一个表tbTree，表的结构设计如下：
列名 数据类型 描述 长度 主键
ID Int 节点编号 4 是
ParentID Int 父节点编号 4
ConText Nvarchar 我们要显示的节点内容 50
在SQL SERVER 2000中建表的脚本：
CREATE TABLE [dbo].[tbTree] (
[ID] [int] NOT NULL ,
[Context] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
[ParentID] [int] NULL
) ON [PRIMARY]
在表中添加如下记录：
insert tbtree (ID,Context,ParentID) values ( 1,'中国',0)
insert tbtree (ID,Context,ParentID) values ( 2,'北京',11)
insert tbtree (ID,Context,ParentID) values ( 3,'天津',11)
insert tbtree (ID,Context,ParentID) values ( 4,'河北省',1)
insert tbtree (ID,Context,ParentID) values ( 5,'广东省',1)
insert tbtree (ID,Context,ParentID) values ( 6,'广州',5)
insert tbtree (ID,Context,ParentID) values ( 7,'四川省',1)
insert tbtree (ID,Context,ParentID) values ( 8,'成都',7)
insert tbtree (ID,Context,ParentID) values ( 9,'深圳',5)
insert tbtree (ID,Context,ParentID) values ( 10,'石家庄',4)
insert tbtree (ID,Context,ParentID) values ( 11,'辽宁省',1)
insert tbtree (ID,Context,ParentID) values ( 12,'大连',11)
insert tbtree (ID,Context,ParentID) values ( 13,'上海',1)
insert tbtree (ID,Context,ParentID) values ( 14,'天河软件园',6)
insert tbtree (ID,Context,ParentID) values ( 15,'汕头',5)
页面文件Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>测试</title> <script language=javascript>
function postBackByObject()
{
var o = window.event.srcElement; if (o.tagName == "INPUT" && o.type == "checkbox") { __doPostBack("","");
} }
</script></head><body> <form id="form1" runat="server"> <div> <asp:TreeView ID="trvList" runat="server" OnTreeNodeCheckChanged="trvList_TreeNodeCheckChanged" > </asp:TreeView> </div> </form></body></html>代码文件Default.aspx.cs
using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using Microsoft.Practices.EnterpriseLibrary.Data;using System.Data.Common;public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { BindDate(); } } protected void BindDate() { Database db = DatabaseFactory.CreateDatabase(); string select = "select * from tbTree"; DbCommand cmd = db.GetSqlStringCommand(select); DataSet ds = db.ExecuteDataSet(cmd); LoadTreeView(0, (TreeNode)null,ds); trvList.Attributes.Add("onclick", "postBackByObject()"); } protected void LoadTreeView(int ParentID, TreeNode pNode,DataSet ds) { DataView dvTree = new DataView(ds.Tables[0]); dvTree.RowFilter = "[ParentID]=" + ParentID; foreach (DataRowView Row in dvTree) { if (pNode == null) { //添加根节点 TreeNode tn = new TreeNode(); tn.Text = Row["Context"].ToString(); tn.Value = Row["ID"].ToString(); tn.Expanded = true; tn.SelectAction = TreeNodeSelectAction.Expand; tn.ShowCheckBox = true; trvList.Nodes.Add(tn); dvTree = null; LoadTreeView(Int32.Parse(Row["ID"].ToString()), tn,ds); //再次递归 } else { TreeNode tnmore = new TreeNode(); tnmore.Text = Row["Context"].ToString(); tnmore.Value = Row["Context"].ToString(); tnmore.Expanded = false; tnmore.ShowCheckBox = true; tnmore.SelectAction = TreeNodeSelectAction.Expand; pNode.ChildNodes.Add(tnmore); dvTree = null; LoadTreeView(Int32.Parse(Row["ID"].ToString()), tnmore,ds); //再次递归 } } } protected void trvList_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e) { SetChildChecked(e.Node); } protected void SetChildChecked(TreeNode parentNode) { foreach (TreeNode node in parentNode.ChildNodes) { node.Checked = parentNode.Checked; if (node.ChildNodes.Count > 0) { SetChildChecked(node); } } }}web.config中添加
configSections> <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null"/> </configSections> <dataConfiguration defaultDatabase="ConnStr"/> <connectionStrings> <add name="ConnStr" connectionString="你的连接字符串" providerName="System.Data.SqlClient"/> </connectionStrings>
